Spatial and temporal distribution of octylphenol （OP） and nonylphenol （NP） in Mai Po Marshes, a subtropical estuarine wetland in Hong Kong, were investigated. Surface water samples were collected every month from ...Spatial and temporal distribution of octylphenol （OP） and nonylphenol （NP） in Mai Po Marshes, a subtropical estuarine wetland in Hong Kong, were investigated. Surface water samples were collected every month from 11 sites during the period of September- December 2004. Concentrations of OP and NP ranged from 11.3 to 348 ng/L and from 29 to 2591 ng/L, respectively. The high levels of NP and OP were found in November and December than in September and October. The levels of OP and NP have no significant spatial differences except September. Total organic matter in the sediments appeared to be an important factor in controlling the fate of these compounds in the aquatic environment.展开更多
Introduction:The benefit of wetlands for reducing poverty depends on the effectiveness of governance systems that influence peoples’behaviour in the wise use of wetlands.Objectives:This article critically analyses th...Introduction:The benefit of wetlands for reducing poverty depends on the effectiveness of governance systems that influence peoples’behaviour in the wise use of wetlands.Objectives:This article critically analyses the current poverty reduction strategies,agrarian policies and economic investments governing wetland usage,especially in Tanzania,with regard to their impact on sustainable Ramsar wetlands management.Methodology:It analyses the management structure,domestic policies and legal framework relating to the protection of wetlands in Tanzania in accordance to the wise use concept of the Ramsar Convention.Outcomes:Tanzanian legal provisions for wetland protection are uncoordinated and too limited in their coverage and scope to sufficiently address the destruction of wetland ecosystems.There is no comprehensive national legal framework to guide sustainable management of Ramsar wetlands in Tanzania as laid out by the Ramsar Convention,which the country ratified in the year 2000.Conclusion:Without a sound legislative and policy-making framework,Tanzanian wetlands and their diverse ecosystem services will continue to degenerate with current strategies of increasing agribusiness and other developmental projects or economic investments.This paper provides critical baseline information to inform decision makers to develop appropriate policy and laws,which promote the wise use of wetlands in Tanzania.展开更多
基金Project supported by the Science Faculty Strategic Research of HongKong Baptist University(No.FRG/03-04/II-51)the Environment and Conservation Fund of Hong Kong Environmental Protection Department(No.16/2003)the National Natural Science Foundation of China(No.20307012).
文摘Spatial and temporal distribution of octylphenol （OP） and nonylphenol （NP） in Mai Po Marshes, a subtropical estuarine wetland in Hong Kong, were investigated. Surface water samples were collected every month from 11 sites during the period of September- December 2004. Concentrations of OP and NP ranged from 11.3 to 348 ng/L and from 29 to 2591 ng/L, respectively. The high levels of NP and OP were found in November and December than in September and October. The levels of OP and NP have no significant spatial differences except September. Total organic matter in the sediments appeared to be an important factor in controlling the fate of these compounds in the aquatic environment.
基金This work was supported by the Schlumberger Foundation-Faculty for the Future[-]German Academic Exchange Service(DAAD)[-]grants fellowships.
文摘Introduction:The benefit of wetlands for reducing poverty depends on the effectiveness of governance systems that influence peoples’behaviour in the wise use of wetlands.Objectives:This article critically analyses the current poverty reduction strategies,agrarian policies and economic investments governing wetland usage,especially in Tanzania,with regard to their impact on sustainable Ramsar wetlands management.Methodology:It analyses the management structure,domestic policies and legal framework relating to the protection of wetlands in Tanzania in accordance to the wise use concept of the Ramsar Convention.Outcomes:Tanzanian legal provisions for wetland protection are uncoordinated and too limited in their coverage and scope to sufficiently address the destruction of wetland ecosystems.There is no comprehensive national legal framework to guide sustainable management of Ramsar wetlands in Tanzania as laid out by the Ramsar Convention,which the country ratified in the year 2000.Conclusion:Without a sound legislative and policy-making framework,Tanzanian wetlands and their diverse ecosystem services will continue to degenerate with current strategies of increasing agribusiness and other developmental projects or economic investments.This paper provides critical baseline information to inform decision makers to develop appropriate policy and laws,which promote the wise use of wetlands in Tanzania.
